Harmonics Analysis Studies
FAQ
Harmonic distortion can harm power systems and damage equipment. Our Harmonic Studies help identify issues and develop solutions to improve power quality and system reliability.
Our engineers use sophisticated simulation software to assess your system’s performance under different harmonic conditions. We will verify the results with the IEEE 519 to ensure compliance. Trust us to optimize your power supply and keep your systems running efficiently.
What is harmonics analysis and why is it important?
Harmonics analysis is an engineering study that measures and assesses the levels of harmonic distortion present in your electrical system. Harmonic distortion occurs when non-linear loads — such as variable frequency drives, UPS systems, switching power supplies, and electronic equipment — draw current in a non-sinusoidal pattern, introducing harmonic currents into the system. Left unaddressed, harmonics can cause overheating, equipment damage, reduced system efficiency, and interference with sensitive instrumentation and controls.
What causes harmonic distortion in electrical systems?
Harmonic distortion is generated by non-linear loads that draw current in pulses rather than in a smooth sinusoidal wave. Common sources include variable frequency drives (VFDs), uninterruptible power supplies (UPS), electronic ballasts, rectifiers, arc furnaces, and large concentrations of computer and IT equipment. As facilities increasingly adopt energy-efficient technologies and electronic controls, harmonic distortion has become a more prevalent concern in both industrial and commercial electrical systems.
What are the effects of harmonic distortion on electrical equipment?
Harmonic currents cause a range of damaging effects including overheating of transformers, cables, and motors beyond their rated capacity, nuisance tripping of circuit breakers and protective devices, reduced efficiency and increased energy consumption, interference with sensitive electronic equipment and instrumentation, premature failure of capacitor banks, and voltage distortion that affects the performance of connected equipment throughout the facility.
What does RW Electric's harmonics analysis study include?
RW Electric: A Division of KROON’s harmonics analysis service includes field measurement of harmonic current and voltage levels at key points in your electrical system using specialized power quality analyzers, analysis of the recorded data to identify harmonic sources and assess compliance with applicable standards, and a detailed engineering report with findings and recommendations for mitigation. Where harmonic levels exceed acceptable limits, RW Electric provides targeted recommendations for harmonic mitigation measures.
What standard does RW Electric use to assess harmonic distortion levels?
RW Electric assesses harmonic distortion levels in accordance with IEEE 519 — the leading international standard for harmonic control in electrical power systems. IEEE 519 establishes limits for both current harmonic distortion at the point of common coupling and voltage harmonic distortion on the system. Compliance with IEEE 519 is increasingly required by utilities and is the recognized benchmark for acceptable harmonic performance in commercial and industrial facilities.
What harmonic mitigation solutions does RW Electric recommend?
Based on the findings of the harmonics analysis, RW Electric’s engineers recommend appropriate mitigation measures tailored to your system and the sources of distortion identified. Solutions may include passive harmonic filters, active harmonic filters, isolation transformers, line reactors, phase-shifting transformers, or modifications to the configuration of non-linear loads. RW Electric can also manage the supply and installation of recommended mitigation equipment as part of a broader project scope.
How does harmonic mitigation improve system performance and reduce costs?
By reducing harmonic distortion to within acceptable limits, harmonic mitigation measures reduce transformer and conductor overheating — allowing equipment to operate within its design ratings and extending its service life. Mitigation also reduces energy losses associated with harmonic currents, improves power factor, reduces the risk of nuisance tripping and equipment failures, and protects sensitive instrumentation and controls from interference — all of which contribute to lower operating costs and improved system reliability.
Where does RW Electric provide harmonics analysis study services?
RW Electric: A Division of KROON provides harmonics analysis study services throughout Kingston and Eastern Ontario, and through the BCES Global network of subsidiary companies, across the rest of North America.
How do I arrange a harmonics analysis study with RW Electric?
Contact RW Electric at 613-634-2341 or through the request form at rwelectric.com. Our engineering team will assess your facility’s power quality concerns and provide a scoped proposal for a harmonics analysis study and any recommended mitigation measures.
